Introduction How to check exit codes in bash Linux. You can not see the numeric codes unless you want to. If you're going to see the numeric exit code use echo $? command. In Bash, the exit code of a command or script is stored in a special variable called $?. The exit code indicates the success or failure of the previous command or script. Conventionally, an exit code of 0 means success, while a non-zero exit code indicates an error or failure. Recommended Read:   Change Group Ownership in Linux with the chgrp Command Install and use htop command in Linux Check exit codes in bash What are Exit Codes? Exit codes are numeric values that represent the status of a command execution in Bash. A zero (0) exit code typically indicates a successful execution, while non-zero values signify different types of errors or failures. By analyzing these exit codes, you can determine whether a command completed successfully or encountered issues during execution.  For example check exit codes in b